硫酸锌和乳酸锌对罗非鱼（Oreochromis niloticus）皮胶原蛋白肽螯合锌性质的影响。
Effects of zinc sulfate and zinc lactate on the properties of tilapia (Oreochromis Niloticus) skin collagen peptide chelate zinc.
机构信息
Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Hainan 570228, China; College of Food Science and Technology, Hainan University, Hainan 570228, China.
Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Hainan University, Hainan 570228, China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Haikou 570228, China; Engineering Research Center of Utilization of Tropical Polysaccharide Resources, Ministry of Education, Haikou 570228, China; College of Food Science and Technology, Hainan University, Hainan 570228, China.
出版信息
Food Chem. 2021 Jun 15;347:129043. doi: 10.1016/j.foodchem.2021.129043. Epub 2021 Jan 9.
In this study, the properties difference of Tilapia (Oreochromis Niloticus) skin collagen peptide chelate zinc prepared by zinc sulfate (P-Zn-S) and zinc lactate (P-Zn-L) were investigated. The results indicated that compared with P-Zn-L, P-Zn-S exhibited higher Zn-chelating capacity and different structural morphology, which may closely relate to the composition amino acid of Asp, Glu, His, Lys, Arg, Cys and Pro. FTIR and UV-Vis analysis indicated that different zinc sources could influence the metal ligands and the types of amino acid residues which were involved in chelation reaction. P-Zn-L exhibited better zinc solubility and had higher dialyzable zinc than P-Zn-S, indicating that P-Zn-L had better zinc bioaccessibility. These results suggested that P-Zn-L with a granular structure could reduced gastric stability, promoted intestinal release, and was beneficial to zinc absorption, which can be used as dietary zinc carriers.
在这项研究中，我们研究了由硫酸锌（P-Zn-S）和乳酸锌（P-Zn-L）制备的罗非鱼（Oreochromis niloticus）皮胶原蛋白肽锌配合物的性质差异。结果表明，与 P-Zn-L 相比，P-Zn-S 具有更高的锌螯合能力和不同的结构形态，这可能与 Asp、Glu、His、Lys、Arg、Cys 和 Pro 等组成氨基酸密切相关。傅里叶变换红外光谱（FTIR）和紫外可见光谱（UV-Vis）分析表明，不同的锌源可能会影响参与螯合反应的金属配体和氨基酸残基类型。P-Zn-L 具有更好的锌溶解度，可透析锌含量高于 P-Zn-S，表明 P-Zn-L 具有更好的锌生物利用度。这些结果表明，具有颗粒状结构的 P-Zn-L 可以降低胃稳定性，促进肠道释放，有利于锌的吸收，可作为膳食锌载体。
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